Replaceable battery

Abstract

A replaceable battery including: a cell stack; and a case for accommodating the cell stack, in which the case includes: a first member having an L-shaped cross section that includes a bottom plate for supporting the cell stack; a second member having an L-shaped cross section that is arranged to face the first member; a first lid part for closing one opening part of the main body part; and a second lid part having a connector for closing the other opening part of the main body part, and in which the cell stack is arranged closer to a side plate of the first member, the case has a spatial region above the cell stack, and a region of the side plate of the first member overhanging the spatial region and a top plate of the second member are fastened together with a fastening member.

What is claimed is: 
     
         1 . A replaceable battery removably mounted on a vehicle, the battery comprising at least:
 a rectangular parallelepiped cell stack having a plurality of battery cells stacked thereon; and   a case for accommodating the cell stack,   wherein the case comprises:
 a first member having an L-shaped cross section that includes a bottom plate for supporting the cell stack and extends along a side surface of the cell stack; 
 a second member having an L-shaped cross section that is arranged to face the first member to thereby form a rectangular tube shaped main body part with the first member, and extends along a side surface of the cell stack; 
 a first lid part for closing one opening end of the main body part; and 
 a second lid part having a connector protruding outward so as to be connectable to the vehicle and closing the other opening end of the rectangular tube shaped main body part, 
   and wherein
 the cell stack is arranged closer to a side plate of the first member than to a side plate of the second member, 
 the case has a spatial region above the cell stack, and 
 a region of the side plate of the first member overhanging the spatial region and a top plate of the second member are fastened together with a fastening member. 
   
     
     
         2 . The replaceable battery according to  claim 1 , wherein the spatial region is a smoke exhaust region for releasing gas generated in the cell stack. 
     
     
         3 . The replaceable battery according to  claim 1 , further comprising an electronic device including a voltage measuring device for measuring voltages of the plurality of the battery cells,
 wherein the electronic device is provided between the cell stack and the side plate of the second member.   
     
     
         4 . The replaceable battery according to  claim 1 , wherein
 the replaceable battery is attached to and detached from the vehicle by sliding the replaceable battery longitudinally,   the first lid part has a pull-handle, and   the second lid part has a grip-handle.   
     
     
         5 . The replaceable battery according to  claim 4 , wherein
 a rib groove extends in a longitudinal direction of the main body part on an upper surface of the main body part, and   the grip-handle is accommodated in the rib groove when not in use.